UBUNTU-CVE-2015-2756

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Source
https://ubuntu.com/security/CVE-2015-2756
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-2756.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2015-2756
Upstream
Downstream
Related
Published
2015-04-01T00:00:00Z
Modified
2025-07-16T08:11:27.762374Z
Severity
  • Ubuntu - low
Summary
[none]
Details

QEMU, as used in Xen 3.3.x through 4.5.x, does not properly restrict access to PCI command registers, which might allow local HVM guest users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response.

References

Affected packages

Ubuntu:14.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu@2.0.0+dfsg-2ubuntu1.11?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.0+dfsg-2ubuntu1.11

Affected versions

1.*

1.5.0+dfsg-3ubuntu5
1.5.0+dfsg-3ubuntu6
1.6.0+dfsg-2ubuntu1
1.6.0+dfsg-2ubuntu2
1.6.0+dfsg-2ubuntu3
1.6.0+dfsg-2ubuntu4
1.7.0+dfsg-2ubuntu1
1.7.0+dfsg-2ubuntu2
1.7.0+dfsg-2ubuntu3
1.7.0+dfsg-2ubuntu4
1.7.0+dfsg-2ubuntu5
1.7.0+dfsg-2ubuntu7
1.7.0+dfsg-2ubuntu8
1.7.0+dfsg-2ubuntu9
1.7.0+dfsg-3ubuntu1~ppa1
1.7.0+dfsg-3ubuntu1
1.7.0+dfsg-3ubuntu2
1.7.0+dfsg-3ubuntu3
1.7.0+dfsg-3ubuntu4
1.7.0+dfsg-3ubuntu5
1.7.0+dfsg-3ubuntu6
1.7.0+dfsg-3ubuntu7

2.*

2.0.0~rc1+dfsg-0ubuntu1
2.0.0~rc1+dfsg-0ubuntu2
2.0.0~rc1+dfsg-0ubuntu3
2.0.0~rc1+dfsg-0ubuntu3.1
2.0.0+dfsg-2ubuntu1
2.0.0+dfsg-2ubuntu1.1
2.0.0+dfsg-2ubuntu1.2
2.0.0+dfsg-2ubuntu1.3
2.0.0+dfsg-2ubuntu1.5
2.0.0+dfsg-2ubuntu1.6
2.0.0+dfsg-2ubuntu1.7
2.0.0+dfsg-2ubuntu1.8
2.0.0+dfsg-2ubuntu1.9
2.0.0+dfsg-2ubuntu1.10

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "qemu",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-common",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-guest-agent",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-guest-agent-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-keymaps",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-kvm",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-aarch64",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-arm",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-arm-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-common",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-common-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-mips",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-mips-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-misc",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-misc-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-ppc",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-ppc-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-sparc",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-sparc-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-x86",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-system-x86-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-user",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-user-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-user-static",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-user-static-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-utils",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        },
        {
            "binary_name": "qemu-utils-dbgsym",
            "binary_version": "2.0.0+dfsg-2ubuntu1.11"
        }
    ]
}

Ubuntu:14.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen@4.4.1-0ubuntu0.14.04.5?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4.1-0ubuntu0.14.04.5

Affected versions

4.*

4.3.0-1ubuntu1
4.3.0-1ubuntu2
4.3.0-1ubuntu3
4.3.0-1ubuntu4
4.3.0-1ubuntu5
4.4.0-0ubuntu3
4.4.0-0ubuntu4
4.4.0-0ubuntu5
4.4.0-0ubuntu5.1
4.4.0-0ubuntu5.2
4.4.1-0ubuntu0.14.04.1
4.4.1-0ubuntu0.14.04.2
4.4.1-0ubuntu0.14.04.3
4.4.1-0ubuntu0.14.04.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libxen-4.4",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "libxen-dev",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "libxen-ocaml",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "libxen-ocaml-dev",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "libxenstore3.0",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-hypervisor-4.1-amd64",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-hypervisor-4.3-amd64",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-hypervisor-4.3-armhf",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-hypervisor-4.4-amd64",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-hypervisor-4.4-arm64",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-hypervisor-4.4-armhf",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-system-amd64",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-system-arm64",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-system-armhf",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-utils-4.4",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xen-utils-common",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        },
        {
            "binary_name": "xenstore-utils",
            "binary_version": "4.4.1-0ubuntu0.14.04.5"
        }
    ]
}